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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * by Oracle in the LICENSE file that accompanied this code.
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 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
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package jdk.graal.compiler.truffle.test.builtins;

import com.oracle.truffle.api.CompilerDirectives;
import com.oracle.truffle.api.dsl.Cached;
import com.oracle.truffle.api.dsl.Specialization;
import com.oracle.truffle.api.nodes.NodeInfo;
import com.oracle.truffle.api.strings.TruffleString;
import com.oracle.truffle.sl.SLException;
import com.oracle.truffle.sl.builtins.SLBuiltinNode;
import com.oracle.truffle.sl.runtime.SLNull;

/**
 * Asserts a given value to be <code>false</code> and throws an {@link AssertionError} if the value
 * was <code>true</code>.
 */
@NodeInfo(shortName = "assertFalse")
public abstract class SLAssertFalseBuiltin extends SLBuiltinNode {

    @Specialization
    public boolean doAssert(boolean value, TruffleString message,
                    @Cached TruffleString.ToJavaStringNode toJavaStringNode) {
        if (value) {
            CompilerDirectives.transferToInterpreter();
            throw SLException.create(message == null ? "" : toJavaStringNode.execute(message), this);
        }
        return value;
    }

    @Specialization
    public boolean doAssertNull(boolean value, @SuppressWarnings("unused") SLNull message) {
        return doAssert(value, null, null);
    }

}
